Valve.



J. L. FITTS.

VALVE.

, ARPLIUATION FILED JULY 10.1909. r 939,323, Patented N0v. 9,1909.

I a H :l 1' 14 III UN STATEfdFATENT QFFICE.

JAMES LQGAII FITTS, 0F MERCHANTVILLE NEVJ JERSEY, ASSIGNOR T0 STER &CGMPA'NY. A GQRPORATJON OF "WARREN WEB- NEVV JERSEY.

VALVE.

Application filed July 10, 1909. Serial No. 506,882.

To all whom it may concern:

Be 1t known that I, JAMES Lesa-v Frrrs, a

citizen of the United States, and a resident of Merchantville, Pensaukentownship, and State of New Jersey, have invented an Improvement inValves, of which the followingis a specification.

My invention has reference to valves and consists of certainimprovements which are fully set forth in the following specificationand shown in the accompanying drawings which form a part thereof.

The object of my invention is to provide a simple construction of valveespecially adapted as av modulation valve for use in steam heatingsystems and more especially for controlling the supply of steam to theradiator thereof, whereby predetermined amounts of steam may be admittedto the radiator to suit the particular heating 'requirements thereof.

My object is to provide an inexpensive construction of the working partswhich will maintain their operative conditions, be cheaply made, andeasily repaired.

My invention consists of certain details of construction constitutingthe operative strucscribed hereinafter and ture of the valve and whichare fully demore particularly defined in the claims. These improvementswill be better understood by reference tothe drawings in which:

Figure 1 is a plan view of a valve embodying my'invention; Fig. 2 is avertical sectional view of the same; Fig. 3 is a transverse sectionalview through the body of the valve; Fig. 4 is a sectional elevation ofthe valve piece removed; Fig. 5 is a plan view of the same; and Fig. 6is a cross section of the valve piece on line ar:cc of Fig. .4.

2, is a valve body and has an inlet 4 and an outlet 3. The valve bodyfurthermore is provided with a conical valve seat 5 arranged within itand having its largest end opening downward into the inlet'port 4.

The outlet 3 communicates with the interior of the valve seat 5 by aport 8. The body is also provided with transverse walls 7 which shut-offa communication between the outlet 3, and the interior chamber 6 of thevalve body, except .by way of the port 8 in the valve seat. p

10 is a conical valve plug and has a taper with the smallest diameternext to the stem Specification of Letters Patent.

Patented Nov. 9, 1909.

11. The conical valve piece 10 seats upon the conical valve seat 5 andthe stem 11 extends upward through the upper part of the valve body. Asteam tight joint is made around the valve stem by a stuffing box-(l2containing packing under compression by means of a bushing 13. V

The alve piece 10 is held upward in its seat by means of an adjustablebushing 18 which is screwed into the body below the valve seat, asindicated at 9. "lhis bushing 18 is preferably a split spring ring andis of larger diameter than the largest end of the valve piece and is ofsmaller diameter than the inlet port l. By adjusting the bushing 18, thevalve piece is held as tightly in the valve seat as is necessary tosecure a tight joint.

The top of the valve stem 11 is made square to receive a handle plate llhaving a crank handle 15 and a'pointer 16. plate 14. is made invertedcup shaped so as to extend over and hide the stufiing b0- structurethrough which the shaft 11 eaz tends. This platelet is made circular asshown in Fig. 1 and is of less diameter than the circular indicatorplate or fiange 19 arranged immediately below the same and formedintegral with the body 2.01 the valve. This indicator plate 19 containstwo limit stops 1?, one adjacent to the word Open and the other adjacentto the word Shut and also contains numbers indicating different portionsof opening. When the handle is rotated so thatthe pointer 16 restsagainst the stop 17 adjacent to the word Shut the valve will becompletely closed and when turned so that the pointer 16 rests againstthe stop 17 adjacent to the word Open then the valve is fully open.'lVhen the pointer assumes intermediate positions, corresponding to thenumero'us places indicated upon the indicator flange 19, the valvewillbe opened to different egrees.

The structure of the valve is such that with less than one revolutionofthe handle and valve piece the valve will pass from the *closedcondition to the full open condition and all intermediate conditions, sothat the operator may know in a moment theextent of the opening. Thevalve piece 10 has its face provided with a plurality of openingsarranged jabout its The and 6, These openings vary'in area and thediameter of the .opening 20 is approximately twicethe diameter ofv theopening 21, the

diameter of the opening 21 is approximately .twice the diameter of theopening 22, and

,suchas to widthlthat as one of the ports is being shut ofi, the next;adjacent port is being opened, so that at times two of these ports to 23are partly opened through the port 8. Thisstructureis such, that thereis a gradual increasing steam passage area fromthe smallest opening tothe-largest and hence, the possibility of gradual adjustment in thesteam supply. However, in the normal operation of the valve, thepositions of the valve when ordinarily adjusted and left would be tobring one of the ports 20 to 23 in line with the opening 8.

The angle of the taper of the plug valve 10 is such that it will not jamfast, even at considerably high pressure. The split ring or bushing 18holds the valve piece from dropping downward and becoming lost when thehandle plate is removed and repacking the stufiing box about the stem isbeing done. By making the bushing 18 in the form of a I split ring itwill firmly hold itself in its adjusted position.

It will also be observed that in particular valve structure shown, thechamber 6 is practically sealed both to the inlet and outlet ports andconsequently, there is no pressure within this chamber to produceleakage through'the packed joint and therefore, only a smaller amount ofpacking would be necessary and the packing would, moreover,-have anincreased life over what would be the case if the steam had free accessto the stuffin box.

hile the construction shown is in the form which I have foundexcellently adapted to the commercial use of my invention, the detailsthereof may be modified withoutdeparting from the spirit of theinvention. Having now described my invention what I claim as new anddesire to secure by Letters Patent is sald plug valve piece also havinga stem extending through the valve body, a stufiing box around the valvestem, a handle to operate the conical plug valve piece, and a r ng icalvalve seat within the body having its larger end in communication withthe inlet port and its side in communication with the outlet port, witha conical plug valve piece fitting the valve seat and having a:plurality of ports of relatively different sized open ings through theconical face of thev valve plug and at intervals about its circumferenceand a port through its larger end and said plug valve piece also havinga stem extendmg through the valve body, a stufiing box around the valvestem, a, handle to operate the conical plug valve piece, a ring shapedbushing'screwed into the body part below the valve piece for holding itin its valve seat with the proper degree of pressure,-and means toindicate from ,the outside of the valve the position of theseveralports.ofthe plug valve piece with respect to theport through the valve seat. 1j

3. In a valve, the combination'cf the body part having inlet and outletports anda con ical valve seat within the body having its larger end incommunication with the inlet piece of larger diameter than the bottom ofthe valve seat and of smaller diameter than the inlet port and forminganannular abutment for holding it in its; valve seat with the properdegree of pressure. v,

4:. In a valve the combiation of thebody part having inlet and out-letports and a'conical valve seat within the body having its larger end inconnnunication with the inlet port and its side in communication withthe outlet port and also having walls forfornn in a closed compartmentadjacent- Ito the smaller end of the valve seat, with-,a conical plugvalve piece fitting the valve seatfand having a port opening throughtheside aiid larger end and said plug -valvelpieec also having a stemextending through the'valve body, said valve stem passing; througlrtheclosed chamber to the outside oftliesvalve the conical seat but havingno direct communication with the inlet and outlet ports, combined with aplug valve fitting the valve seat and provided with a port extendingthrough its side and larger endand a valve stem extending through theclosed chamber and valve body to the outside thereof, and a stuffing boxcarried by the valve body and forming a steam tight packing about thevalve stem.

t' In a valve, a body having inlet and out-- let ports and an annularvalve seat between them, the large end of the seat opening toward one ofthe ports and the wall of the seat. opening into another of the ports bya passageway and also having a closed chamher in communication with thesmall end of the conical seat but having no direct com-c munication withthe inlet and outlet ports, (@nbined with a plug valve fitting the valveseat and provided with a port extending through its side and larger endand a valve stem extending" through the closed chamber and valve body tothe outside thereof, a stuffing box carried by the valve body andforming a steam tight packing about the valve stem, and a handleoperating device for i=0- tat'ing the valve stem and its plug valvehaving means for shielding the stufiing box.

7. In a valve, a body having inlet and outlet ports and an annular valveseat between them, the large end of the seat opening toward one of theports and the wall of the seat opening into another of the ports by. apassageway and also having a closed chamber in communication with thesmall end of the conical seat but having no direct communication with.the inlet and outlet ports, combined with a plug-valve fitting the valveseat and having a plurality of ports of different areas communicating ina common passage through the large endof the plug valve and openingthrough the conical surface thereof in relatively diiferent positionabout its circumference and a valve stem extending through the closedchamber and valve body to the outside thereof, a stutiing box carried bythe valve body and forming a steam tight packing about the valve stem,and means for limiting the rotation of the valve stem within onerevoluto the tion and indicating the osition of the several ports of thevalve p ug with respect passageway through the side of the valve seat. 1

8. In -a valve, body having inlet and outlet ports and an'annular valveseat between them, the large end of the seat openin toward one of theports and the wall 0 the seat opening into another of the ports by apassageway and also having a closed chamher in communication with thesmall end of the conicalhseat but having no direct com-' munication withthe inlet and outlet ports,

combined with a plug valve fitting the valve.

seat and provided with a port extending through its side and larger endand a valve stem extending through the closed chamber and valve body tothe outside thereof, a stuffing box carried by the valve body andforming a steam tight packing about the valve stem, a handle operatingdevice for rotating the valve stem and its plug having means forshielding the stuffing box, and a ring bushing adj ustably secured inthe valve body below the large end of the plug valve for holding it inposition within its'seat.

9. Ina valve, a body having inlet and outlet pdrts and an annular valveseat between them, the large end of the seat opening toward one of theports and ,the wall of the seat opening into another of the ports by apassageway and also having aclosed chamber in communicatlon with thesmall end of the conical seat but having no direct";

communication with the inlet and outlet ports, combined with a (plugvalve fitting the;

.wlth a port extending through its side and larger end and a valve seatand provide valve stem extending chamber and valve body of, a stuffingthrough the closed to the outside therebox carried by the valve body andforming a steam tight packing about the valve stem, a handle operatingdevice for rotating the valve stem and 1ts plug valve having means forshielding the stuffing box,

and a ring bushing adj ustably'secured in the valve body below the largeend of the plug valve for holding it in position within its seatconsisting of a split ring having the upper surface in annular form towork against the valve plug and the lower part screw-threaded to form anadjustable connection with the valve body below the large end of theconical seat.

In testimony of which inventioml hereunto set my hand.

JAMES LOGAN FITTS.

